Issue |
E3S Web Conf.
Volume 326, 2021
International Conference on Innovations, Physical Studies and Digitalization in Mining Engineering 2021
|
|
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Article Number | 00018 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.1051/e3sconf/202132600018 | |
Published online | 24 November 2021 |
Drill rig with a down-the-hole hammer for regulating the drilling rate by changing the air flow
Saint-Petersburg Mining University, Department of Mechanical Engineering, 2 21st Line V.O., 199106, SaintPetersburg, Russia
* Corresponding author: emil.7.07.7.eq@gmail.com
At present, a lack of efficiency of the rotary drilling intensification can be observed at mining enterprises that employ drill rigs. Due to this, we propose to enhance the rotary drilling using shock loads by installing a down-the-hole (DTH) hammer into the drill string of the rig for roller drilling, for instance, SBSh-250. The paper discusses the issue related to an increase in the drilling rate using a drill rig with DTH hammer and adjustable valve that regulates the air flow. The paper considers different types of drilling in engineering and geological surveys. Rocks were sampled for various types of drilling. The physical and mechanical properties of rocks, which affect the drilling process, were considered. The study focuses on a significant increase in the drilling rate through an increase in the impact power. As part of the study, an improved drill rig with a down-the-hole hammer controlled by a radio receiver was developed. When analyzing the physical and mechanical properties, it was shown that the control of DTH hammer operation enables fast drilling of complex rocks without reducing the drilling rate. An increase in the drilling rate of self-propelled equipment using DTH hammers installed above the drill bit will reduce the cost of drilling and extend the service life of the working tool.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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